diff --git a/rtlplayground.c b/rtlplayground.c
index 041c7ed..234bb29 100644
--- a/rtlplayground.c
+++ b/rtlplayground.c
@@ -949,13 +949,12 @@ void handle_rx(void)
 			if (uip_len) {
 			    tcpip_output();
 			}
-		} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x00) { // TCP?
+		} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x00) { // IP packet?
 			if (!management_vlan || management_vlan == rx_packet_vlan) {
 				uip_arp_ipin();	// Learn MAC addresses in TCP packets
 				uip_input();
 				if (uip_len) {
-					// Add ethernet frame
-					uip_arp_out();
+					uip_arp_out(); // Add ethernet frame
 					tcpip_output();
 				}
 			}